JP3327182B2 - Electric bicycle - Google Patents

Electric bicycle

Info

Publication number
JP3327182B2
JP3327182B2 JP26311697A JP26311697A JP3327182B2 JP 3327182 B2 JP3327182 B2 JP 3327182B2 JP 26311697 A JP26311697 A JP 26311697A JP 26311697 A JP26311697 A JP 26311697A JP 3327182 B2 JP3327182 B2 JP 3327182B2
Authority
JP
Japan
Prior art keywords
torque
pedal
rechargeable battery
electric
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP26311697A
Other languages
Japanese (ja)
Other versions
JPH1199984A (en
Inventor
亮 松尾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP26311697A priority Critical patent/JP3327182B2/en
Publication of JPH1199984A publication Critical patent/JPH1199984A/en
Application granted granted Critical
Publication of JP3327182B2 publication Critical patent/JP3327182B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/53—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells in combination with an external power supply, e.g. from overhead contact lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/12—Bikes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、ペダル負荷に応じ
て電動補助駆動装置を作動させることが可能な、電気自
転車に関し、さらに詳しくは、負荷変動によって充電式
電池の電圧が制御回路動作電圧以下に低下することを防
ぐことに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric bicycle capable of operating an electric assist drive device in accordance with a pedal load, and more particularly, to a rechargeable electric bicycle which changes in load.
The present invention relates to preventing a battery voltage from dropping below a control circuit operating voltage.

【０００２】[0002]

【従来の技術】従来の電気自転車は、ペダル駆動装置に
人力によって加えられるペダルトルクおよび充電式電池
の出力電圧値を監視しながら、充電式電池の出力電圧に
は関係なく電動補助駆動装置の出力トルクが前記ペダル
トルクの大きさに比例するように制御し、充電式電池の
出力電圧が電池の消耗により所定の終止電圧よりも低く
なった時点で電動補助駆動装置の動作を停止させてい
た。このような制御方法ではペダルを強く踏んだときに
は、一時的に大電流が流れて充電式電池の出力電圧は終
止電圧よりも低い電圧まで一時的に且つ急激に低下す
る。このような状態になると電動補助駆動装置のマイコ
ンやセンサ等の動作電圧が確保できなくなるので、マイ
コンが電動機駆動装置の動作を停止させて"電池消耗"の
警告を発するように制御していた。2. Description of the Related Art In a conventional electric bicycle, the output of an electric auxiliary driving device is monitored irrespective of the output voltage of a rechargeable battery while monitoring the pedal torque applied to the pedal driving device manually and the output voltage value of a rechargeable battery. Control is performed so that the torque is proportional to the magnitude of the pedal torque, and the operation of the electric auxiliary driving device is stopped when the output voltage of the rechargeable battery becomes lower than a predetermined end voltage due to the consumption of the battery. In such a control method, when the pedal is strongly depressed, a large current flows temporarily, and the output voltage of the rechargeable battery temporarily and rapidly drops to a voltage lower than the end voltage. In such a state, the operating voltage of the microcomputer and the sensor of the electric auxiliary driving device cannot be secured, so that the microcomputer stops the operation of the electric motor driving device and issues a warning of "battery exhaustion".

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、上記従
来の構成では、充電式電池をまだ使い切らないうちに大
きなペダルトルクが加わると急激に出力電圧が低下する
ために"電池消耗"と判断して電動補助駆動装置を停止さ
せ、充電式電池の充電を要求することになる。この結果
一充電あたりの走行距離が短くなるばかりではなく、充
電式電池がニッケルカドミウム電池であった場合などは
メモリー効果を引き起こして充電式電池の性能を十分に
発揮できなくなってしまう。However, in the above-described conventional configuration, when a large pedal torque is applied before the rechargeable battery is used up, the output voltage sharply decreases. The auxiliary driving device is stopped, and charging of the rechargeable battery is required. As a result, not only the traveling distance per charge becomes short, but also when the rechargeable battery is a nickel cadmium battery, a memory effect is caused and the performance of the rechargeable battery cannot be sufficiently exhibited.

【０００４】本発明は、このような課題を解決するもの
であり、充電式電池能力を超えた過大なペダルトルクに
対して電動補助駆動装置の出力トルクすなわち入力電流
を制限することにより制御回路やセンサの電源電圧を担
保し、充電式電池の性能を十分に引き出すことができる
電気自転車の制御方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention solves such a problem, and limits the output torque of the electric auxiliary driving device, that is, the input current, against excessive pedal torque exceeding the capacity of the rechargeable battery, thereby controlling the control circuit and the like. An object of the present invention is to provide a control method for an electric bicycle, which can secure a power supply voltage of a sensor and can sufficiently bring out the performance of a rechargeable battery .

【０００５】[0005]

【課題を解決するための手段】上記課題を解決するため
に本発明は、人力によって駆動されるペダル駆動装置
と、充電式電池によって駆動され前記ペダル駆動装置を
アシストする電動補助駆動装置と、前記ペダル駆動装置
に加えられるペダル入力トルクおよび前記充電式電池の
出力電圧を監視する監視手段とを備えた電気自転車にお
いて、充電式電池の出力電圧が切り替え基準電圧である
ときのペダルトルクを最大許容トルク、前記最大許容ト
ルクが加わったときの電動駆動補助装置の出力トルクを
基準トルクとし、前記最大許容トルクより大きなペダル
入力トルクが加わったとき、ペダル入力トルクを最大許
容トルクとみなすことで、前記電動駆動補助装置の出力
トルクが基準トルク以下に保持されることを特徴とする
電気自転車であり、電池の出力電圧が切り替え基準電圧
より高い時にはペダル入力トルクに比例するように電動
補助駆動装置の出力トルクを制御し、電池の出力電圧が
切り替え基準電圧より小さくなった時にはペダルトルク
が基準トルク以下に維持することにより、充電式電池の
出力電圧が制御回路の動作保証電圧以下に下がらないよ
うにするものである。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a pedal drive device driven by human power, an electric auxiliary drive device driven by a rechargeable battery to assist the pedal drive device, An electric bicycle comprising monitoring means for monitoring a pedal input torque applied to a pedal drive device and an output voltage of the rechargeable battery .
And the output voltage of the rechargeable battery is the switching reference voltage
When the pedal torque is the maximum allowable torque, the maximum allowable torque
Output torque of the electric drive assist device when
Pedal that is larger than the maximum allowable torque as the reference torque
When input torque is applied, the maximum
By regarded as capacity torque, said a <br/> electric bicycle, characterized in that the output torque of the electric drive assist device is held below the reference torque, the pedal input when higher than the reference voltage switching output voltage of the battery By controlling the output torque of the electric auxiliary drive device in proportion to the torque, the output voltage of the rechargeable battery is controlled by maintaining the pedal torque below the reference torque when the output voltage of the battery becomes smaller than the switching reference voltage. This is to prevent the voltage from dropping below the operation guarantee voltage of the circuit.

【０００６】[0006]

【発明の実施の形態】本発明の請求項１に記載の発明
は、人力によって駆動されるペダル駆動装置と、充電式
電池によって駆動され前記ペダル駆動装置をアシストす
る電動補助駆動装置と、前記ペダル駆動装置に加えられ
るペダル入力トルクおよび前記充電式電池の出力電圧を
監視する監視手段とを備えた電気自転車において、充電
式電池の出力電圧が切り替え基準電圧であるときのペダ
ルトルクを最大許容トルク、前記最大許容トルクが加わ
ったときの電動駆動補助装置の出力トルクを基準トルク
とし、前記最大許容トルクより大きなペダル入力トルク
が加わったとき、ペダル入力トルクを最大許容トルクと
みなすことで、前記電動駆動補助装置の出力トルクが基
準トルク以下に保持されることを特徴とする電気自転車
であり、電池から過大な電流が流れ出ることを抑制し、
一時的且つ急激な電圧低下が起こらないように作用す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention relates to a pedal drive device driven by human power and a rechargeable type.
An electric bicycle , comprising: an electric assist drive that is driven by a battery to assist the pedal drive; and monitoring means that monitors a pedal input torque applied to the pedal drive and an output voltage of the rechargeable battery.
Pedal when the output voltage of the
Torque is the maximum allowable torque, and the maximum allowable torque is added.
Output torque of the electric drive assist device when
And the pedal input torque greater than the maximum allowable torque
Is applied, the pedal input torque is
By regarded, the an electric bicycle output torque of the electric drive assist device is characterized in that it is kept below based <br/> quasi torque to suppress an excessive current from flowing from the battery,
It acts to prevent a temporary and sudden voltage drop.

【０００７】また、請求項２記載の発明は、切り替え基
準電圧が電動補助駆動装置の制御回路を正常に駆動する
のに必要最低限度の電圧値より僅かに高い電圧値である
ことを特徴とする請求項１に記載の電気自転車である。According to the second aspect of the present invention, the switching reference voltage is a voltage value slightly higher than the minimum voltage value necessary for normally driving the control circuit of the electric auxiliary driving device.
The electric bicycle according to claim 1, wherein:

【０００８】また、請求項３記載の発明は、充電式電池
がニッケルカドミウム電池であることを特徴とする請求
項１または請求項２に記載の電気自転車であり、メモリ
ー効果を引き起こしても、電池の性能を十分発揮するこ
とができる。According to a third aspect of the present invention, there is provided a rechargeable battery.
Is a nickel cadmium battery
The electric bicycle according to claim 1 or 2, wherein even if a memory effect is caused, the performance of the battery can be sufficiently exhibited.

【０００９】[0009]

【実施例】以下本発明の実施例について、図面を参照し
て説明する。Embodiments of the present invention will be described below with reference to the drawings.

【００１０】図１は本発明の実施例である電気自転車の
概略図を示し、車体フレーム１は従来の自転車と基本構
造は同一であり、前輪と後輪とサドルを一体に連結して
いるパイプが車体中央のサドルパイプ２の下端で一体化
していて、人力によって駆動されるペダル駆動装置をア
シストする電動補助駆動装置３が車体フレーム下方外側
中央部に電源スイッチ４が後輪５と充電式のニッケルカ
ドミウム電池を備えた電池ボックス６の間に組み込まれ
ている。この電動補助駆動装置３には、ペダル回転速度
検出器およびペダルトルク検出器が内蔵され、ペダル回
転速度から人力で自転車をこいでいることと、その時の
車速を計算するための情報を得ている。また、ペダルト
ルク検出器から、ペダルの負荷トルクの情報を得、これ
らの情報から電動補助駆動装置の出力を決定して電動機
を動作させている。FIG. 1 is a schematic view of an electric bicycle according to an embodiment of the present invention. A body frame 1 has the same basic structure as a conventional bicycle, and a pipe for integrally connecting a front wheel, a rear wheel, and a saddle. Are integrated at the lower end of the saddle pipe 2 at the center of the vehicle body, and an electric assist drive device 3 for assisting a pedal drive device driven by human power is provided at a lower outer center portion of the body frame at a power switch 4 and a rear wheel 5 and a rechargeable type. It is incorporated between battery boxes 6 with nickel cadmium batteries. The electric assist driving device 3 has a built-in pedal rotation speed detector and a pedal torque detector, and obtains information that the bicycle is manually driven from the pedal rotation speed and that the vehicle speed at that time is calculated. . Further, information on the pedal load torque is obtained from the pedal torque detector, and the output of the electric auxiliary driving device is determined from the information to operate the electric motor.

【００１１】図２には自転車走行時のペダルトルク、充
電式電池電流、充電式電池電圧の波形を示す。電気自転
車は、マイコンにより乗り手の踏み力すなわちペダルト
ルクと同じ力を電動補助駆動装置が出すように制御され
るので充電式電池電流波形は、ペダルトルクと同様な波
形になる。そのときの充電式電池電圧値は、充電式電池
電流が大きくなるほど、充電式電池電圧低下の割合が大
きくなる。特に充電式電池電池容量小の場合に、充電式
電池電圧低下の割合も大きくなる。よって＋１２Ｖ駆動
のセンサ等を使用している時に、駆動させるための電圧
を確保できなくなると、誤動作を引き起こす可能性があ
る。そこで駆動電圧以上の電圧＋１３Ｖになったときの
ペダルトルクを最大許容トルクＴｈとし、次のペダルト
ルクがＴｈよりも大きくなった場合には、ペダルトルク
をＴｈとしてマイコン内部の計算で使用することで充電
式電池電流もＩｈで制限され、充電式電池電圧低下も＋
１３Ｖで制限される。FIG. 2 shows waveforms of pedal torque, rechargeable battery current, and rechargeable battery voltage during bicycle running. The electric bicycle is controlled by the microcomputer so that the electric assist driving device outputs the same force as the rider's stepping force, that is, the pedal torque. Therefore, the rechargeable battery current waveform has a waveform similar to the pedal torque. In the rechargeable battery voltage value at that time, the rate of the rechargeable battery voltage drop increases as the rechargeable battery current increases. In particular, when the capacity of the rechargeable battery is small, the rate of decrease in the rechargeable battery voltage also increases. Therefore, if a voltage for driving cannot be secured when a sensor or the like driven by +12 V is used, a malfunction may occur. Therefore, the pedal torque when the voltage becomes equal to or higher than the driving voltage +13 V is set as the maximum allowable torque Th, and when the next pedal torque becomes larger than Th, the pedal torque is set as Th and used in the calculation inside the microcomputer. Rechargeable battery current is also limited by Ih, and rechargeable battery voltage drop is also +
Limited at 13V.

【００１２】このようにニッケルカドミウム充電池によ
って駆動される電動補助駆動装置３は、ペダルの負荷ト
ルクをペダルトルク検出器で計り、且つ充電式電池の出
力電池を測定し、得られた充電式電池の出力電圧がセン
サーを含む制御回路を作動するのに最低限必要な電圧で
ある切り替え基準電圧より低くなった時には、電動補助
駆動装置３の出力トルクは一定の値以下に保持されるよ
うに制御するので、充電式電池が低くなった場合、電動
補助駆動装置の出力トルクは大きくならないので充電式
電池の性能を十分に引き出すことができる。As described above, the electric auxiliary driving device 3 driven by the nickel cadmium rechargeable battery measures the load torque of the pedal with the pedal torque detector, measures the output battery of the rechargeable battery , and obtains the obtained rechargeable battery. Is controlled so that the output torque of the electric auxiliary driving device 3 is maintained at a fixed value or less when the output voltage of the electric auxiliary driving device 3 becomes lower than the switching reference voltage which is the minimum voltage required to operate the control circuit including the sensor. to so, when the rechargeable battery becomes low, the rechargeable since the output torque of the electric auxiliary drive is not increased
The performance of the battery can be sufficiently brought out.

【００１３】[0013]

【発明の効果】本願請求項１，２記載の発明によれば、
大きなペダルトルクが加わったことにより電動補助駆動
装置の出力トルクを大きくしようとして充電式電池の出
力電圧が基準電圧値まで下がった場合に、それ以上ペダ
ルトルクが増加しても電動補助駆動装置の出力トルクを
増やさないように制御することで充電式電池出力電圧の
低下を防ぐことができ、制御回路やセンサの電源電圧を
担保することができる。そして従来の制御方法では基準
電圧値以下になると通常システムを止めていたが、この
方式を用いると基準電圧値以下にならないので、充電式
電池容量を最後まで使用でき、走行距離も延長すること
ができる。According to the first and second aspects of the present invention,
If the output voltage of the rechargeable battery drops to the reference voltage value in an attempt to increase the output torque of the electric auxiliary drive due to the application of a large pedal torque, the output of the electric auxiliary drive will increase even if the pedal torque further increases. By controlling so as not to increase the torque, the output voltage of the rechargeable battery can be prevented from lowering, and the power supply voltage of the control circuit and the sensor can be secured. In the conventional control method, the system is normally stopped when the voltage falls below the reference voltage value.However, when this method is used, the voltage does not fall below the reference voltage value, so the rechargeable battery capacity can be used to the end and the mileage can be extended. it can.

【００１４】本願請求項３記載の発明は、メモリー効果
が起こったとしても十分に性能を発揮することができ
る。The invention described in claim 3 of the present application can sufficiently exhibit performance even if a memory effect occurs.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施例における電気自転車の概略構成
図FIG. 1 is a schematic configuration diagram of an electric bicycle according to an embodiment of the present invention.

【図２】本発明の実施例におけるペダルトルク、充電式
電池の電流、電圧波形を示す図FIG. 2 is a diagram showing pedal torque, current and voltage waveforms of a rechargeable battery in an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１ 車体フレーム ２ サドルパイプ ３ 電動補助駆動装置 ４ 電源スイッチ ５ 後輪 ６ 電池ボックス DESCRIPTION OF SYMBOLS 1 Body frame 2 Saddle pipe 3 Electric auxiliary drive unit 4 Power switch 5 Rear wheel 6 Battery box

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 人力によって駆動されるペダル駆動装置
と、充電式電池によって駆動され前記ペダル駆動装置を
アシストする電動補助駆動装置と、前記ペダル駆動装置
に加えられるペダル入力トルクおよび前記充電式電池の
出力電圧を監視する監視手段とを備えた電気自転車にお
いて、充電式電池の出力電圧が切り替え基準電圧である
ときのペダルトルクを最大許容トルク、前記最大許容ト
ルクが加わったときの電動駆動補助装置の出力トルクを
基準トルクとし、前記最大許容トルクより大きなペダル
入力トルクが加わったとき、ペダル入力トルクを最大許
容トルクとみなすことで、前記電動駆動補助装置の出力
トルクが基準トルク以下に保持されることを特徴とする
電気自転車。1. A pedal drive device that is driven by human power, an electric auxiliary drive device that is driven by a rechargeable battery to assist the pedal drive device, a pedal input torque applied to the pedal drive device, and a power supply of the rechargeable battery. <br/> An electric bicycle equipped with monitoring means for monitoring the output voltage .
And the output voltage of the rechargeable battery is the switching reference voltage
When the pedal torque is the maximum allowable torque, the maximum allowable torque
Output torque of the electric drive assist device when
Pedal that is larger than the maximum allowable torque as the reference torque
When input torque is applied, the maximum
By regarded as capacity torque, <br/> bicycle, characterized in that the output torque of the electric drive assist apparatus is held below the reference torque. 【請求項２】 切り替え基準電圧が電動補助駆動装置の
制御回路を正常に駆動するのに必要最低限度の電圧値よ
り僅かに高い電圧値であることを特徴とする請求項１に
記載の電気自転車。2. The electric bicycle according to claim 1, wherein the switching reference voltage is a voltage value slightly higher than a minimum voltage value necessary for normally driving a control circuit of the electric auxiliary driving device. . 【請求項３】 充電式電池がニッケルカドミウム電池で
あることを特徴とする請求項１または請求項２に記載の
電気自転車。3. The rechargeable battery is a nickel cadmium battery.
The electric bicycle according to claim 1 or claim 2, wherein:
JP26311697A 1997-09-29 1997-09-29 Electric bicycle Expired - Lifetime JP3327182B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26311697A JP3327182B2 (en) 1997-09-29 1997-09-29 Electric bicycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26311697A JP3327182B2 (en) 1997-09-29 1997-09-29 Electric bicycle

Publications (2)

Publication Number Publication Date
JPH1199984A JPH1199984A (en) 1999-04-13
JP3327182B2 true JP3327182B2 (en) 2002-09-24

Family

ID=17385057

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26311697A Expired - Lifetime JP3327182B2 (en) 1997-09-29 1997-09-29 Electric bicycle

Country Status (1)

Country Link
JP (1) JP3327182B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012206615A1 (en) 2012-04-23 2013-10-24 Robert Bosch Gmbh Method and device for controlling a pedal vehicle
GB201512700D0 (en) * 2014-08-01 2015-08-26 Ford Global Tech Llc Electric bicycle

Also Published As

Publication number Publication date
JPH1199984A (en) 1999-04-13

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